Builder tool - Command line arguments

m-builder.cc

@@ -1,8 +1,12 @@
 #include "externals.hh"
+
 #include "c-opast.hh"
 #include "c-ops.hh"
 #include "c-opcomp.hh"
 #include "c-opopt.hh"
+
+#include <getopt.h>
+
 #include <ebcl/Files.hh>
 #include <ebcl/SRDText.hh>
 #include <ebcl/Algorithms.hh>
@@ -12,6 +16,13 @@ using namespace opast;
 
 namespace {
 
+const struct option CmdLineOpts_[] = {
+	{ "log-level" ,		required_argument ,	0 , 'L' } ,
+	{ "source-path" ,	required_argument ,	0 , 's' } ,
+	{ "config" ,		required_argument ,	0 , 'c' } ,
+	{ 0 ,			0 ,			0 ,   0 }
+};
+
 /*============================================================================*/
 
 
@@ -43,7 +54,34 @@ void WriteSRDError(
 
 int main( int argc , char** argv )
 {
-	uint32_t logLevel{ 0 };
+	// Parse command line
+	T_Optional< uint32_t > oLogLevel;
+	T_String oSrcPath;
+	int c;
+	while ( ( c = getopt_long( argc , argv , "L:s:c:" , CmdLineOpts_ , nullptr ) ) != -1 ) {
+		switch ( c ) {
+
+		    case 'L':
+			oLogLevel = uint32_t( atoi( optarg ) );
+			break;
+
+		    case 's':
+			if ( oSrcPath ) {
+				fprintf( stderr , "Duplicate source path\n" );
+				exit( EXIT_FAILURE );
+			}
+			oSrcPath = optarg;
+			break;
+
+		    case 'c':
+			fprintf( stderr , "-c/--config option ignored for now\n" );
+			break;
+
+		}
+	}
+
+	// Logger setup
+	const uint32_t logLevel{ oLogLevel ? *oLogLevel : 0 };
 	const auto logger{ [=]( F_OPGenLog func , uint32_t level ) {
 		if ( level > logLevel ) {
 			return;
@@ -54,7 +92,17 @@ int main( int argc , char** argv )
 	} };
 
 	// Open file
-	const T_String inputName( argc >= 2 ? argv[ 1 ] : "demo.srd" );
+	const T_String inputName( [&]() {
+		T_StringBuilder sb;
+		if ( oSrcPath ) {
+			sb << oSrcPath;
+			if ( !oSrcPath.endsWith( "/" ) ) {
+				sb << '/';
+			}
+		}
+		sb << "demo.srd";
+		return T_String{ std::move( sb ) };
+	}( ) );
 	T_File input( inputName , E_FileMode::READ_ONLY );
 	try {
 		input.open( );